Howdy all,
We've updated the forums software to a modern version which has some new interface improvements. However, the theme is currently the default. We will be fixing this soon. Fixed. See below for user-customization options. If you run into any issues, post here and we'll resolve them ASAP.
Thanks
Tom

And great thanks go to humble ASID here, who drove the whole process and worked with Bo to get the style made.
I really like the new layout, it works great on my phone now, and has a light, airy death-by-tentacles feel.